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Finding the Fourth Proportional to 66,159.01, 91,313.88 and 40,687.30

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Solution

The fourth proportional to 66,159.01, 91,313.88 and 40,687.30 is: 56,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.01 : 91,313.88 = 40,687.30 : x
  2. Step 2: Convert to fraction form
    66,159.01/91,313.88 = 40,687.30/x
  3. Step 3: Cross multiply
    66,159.01x = 91,313.88 × 40,687.30
  4. Step 4: Simplify right side
    66,159.01x = 3,715,315,001.44
  5. Step 5: Solve for x
    x = 3,715,315,001.44/66,159.01
  6. Step 6: Final answer
    x = 56,157.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.